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PCA9535PWJ Breakout
I/O EXPANDER 16BIT I2C 2.3-5.5V TSSOP24
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Design a Custom BoardAbout This Component
16-bit I²C/SMBus GPIO expander providing parallel port expansion for microcontroller applications. Operates from 2.3V to 5.5V with ultra-low 1µA standby current and 25mA output drive capability for direct LED control. Features open-drain interrupt output, configurable polarity inversion, and three address pins supporting up to eight devices on a single I²C bus.
Package: TSSOP-24 (4.4×7.8mm) · 24 pins
Why does this need a breakout?
Hand-soldering 0.65mm pitch traces is difficult without proper equipment; a breakout board with standard 0.1in header spacing lets you breadboard-prototype and test these compact devices easily. Commonly used for I2C/SMBus I/O expanders and mixed-signal microcontrollers, this breakout eliminates fine-pitch soldering and allows rapid iteration during development.
Component specifications
ELECTRICAL CHARACTERISTICS
| Manufacturer | Nexperia USA Inc. |
| Part Number | PCA9535PWJ |
| Package | TSSOP-24 (4.4×7.8mm) |
| Pin Count | 24 |
| Clock Frequency | 400 kHz |
| Interface | I2C, SMBus |
| Number of I/O | 16 |
| Output Type | Push-Pull |
| Voltage - Supply | 2.3V ~ 5.5V |
What's Included
BILL OF MATERIALS
- 1x PCA9535PWJ soldered onto breakout PCB
- Pin headers pre-soldered (2.54mm / 0.1" pitch)
- All IC pins broken out to 2.54mm headers
Breakout Board Design
PCB SPECIFICATIONS